Details

Autor(en) / Beteiligte

• Wang, Zhenying
• Liu, Zuoxin
• Zhang, Zikun
• Liu, Xingbin

Titel

Subsurface drip irrigation scheduling for cucumber ( Cucumis sativus L.) grown in solar greenhouse based on 20 cm standard pan evaporation in Northeast China

Ist Teil von

• Scientia horticulturae, 2009-12, Vol.123 (1), p.51-57

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The experiment was conducted in a solar greenhouse to determine the optimum irrigation frequency and quantity for cucumber under subsurface drip irrigation based on evaporation from a 20 cm diameter pan ( E p) placed above the crop canopy. Two irrigation intervals ( I1: 4-day and I2: 8-day) and three plant-pan coefficients ( K cp1: 0.6; K cp2: 0.8 and K cp3: 1.0) were compared. Crop evapotranspiration (ET) and fruits yield increased with the increasing of irrigation water. The K cp3 treatments had the highest yield, while K cp2 had the highest irrigation water use efficiency (IWUE) and water use efficiency (WUE) values in both irrigation intervals. The yields of K cp2 treatments decreased only 4.87% and 5.93% in both intervals though total irrigation water decreased 14.3% compared to K cp3 treatment. Irrigation water amount significantly ( P < 0.01) and positively affected the fruit number and fruit water content, whereas significantly and negatively affected the soluble sugar (SS), Vitamin C (Vc) and free amino acid (FAA) content in fruits. In conclusion, I2 K cp2 (0.8 E p with 8-day interval) was the optimum irrigation schedule for cumber plants grown in solar greenhouse under subsurface drip irrigation in arid and semi-arid areas that are in lack of water resources.